BitmapScreenNail.java revision b29a27f475a2c449abdda8d4e03d30914feed8c6 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.gallery3d.ui;
18
19import android.graphics.Bitmap;
20import android.graphics.RectF;
21import android.util.Log;
22
23// This is a ScreenNail wraps a Bitmap. It also includes the rotation
24// information. The getWidth() and getHeight() methods return the width/height
25// before rotation.
26public class BitmapScreenNail implements ScreenNail {
27    private static final String TAG = "BitmapScreenNail";
28    private final int mWidth;
29    private final int mHeight;
30    private final int mRotation;
31    private final Bitmap mBitmap;
32    private BitmapTexture mTexture;
33
34    public BitmapScreenNail(Bitmap bitmap, int rotation) {
35        mWidth = bitmap.getWidth();
36        mHeight = bitmap.getHeight();
37        mRotation = rotation;
38        mBitmap = bitmap;
39        // We create mTexture lazily, so we don't incur the cost if we don't
40        // actually need it.
41    }
42
43    @Override
44    public int getWidth() {
45        return mWidth;
46    }
47
48    @Override
49    public int getHeight() {
50        return mHeight;
51    }
52
53    @Override
54    public int getRotation() {
55        return mRotation;
56    }
57
58    @Override
59    public void noDraw() {
60    }
61
62    @Override
63    public void pauseDraw() {
64        if (mTexture != null) {
65            mTexture.recycle();
66        }
67    }
68
69    @Override
70    public void draw(GLCanvas canvas, int x, int y, int width, int height) {
71        if (mTexture == null) {
72            mTexture = new BitmapTexture(mBitmap);
73        }
74        mTexture.draw(canvas, x, y, width, height);
75    }
76
77    @Override
78    public void draw(GLCanvas canvas, RectF source, RectF dest) {
79        if (mTexture == null) {
80            mTexture = new BitmapTexture(mBitmap);
81        }
82        canvas.drawTexture(mTexture, source, dest);
83    }
84}
85